Cooler for soda-water and other similar apparatus



V M. s, ANDREWS Couler for Soda-Water and other Similar Apparatus.

No. 223,462. Patented Jan. 13, I880.

WIM,

N-PEYERS, FHOTO-LITHOGRAPNER, WASHINGTON, (I.

" UNITED STATES PATENT OFFICE.

MATTHEW S. ANDREWS, OF SOMERVILLE, ASSIGNOR TO JAMES W. TUFTS, OFMEDFORD, MASSACHUSETTS.

COOLER FOR SODA-WATER AND OTHER SIMILAR APPARATUS.

SPECIFICATION forming part of Letters Patent No. 223,462, dated January13, 1880.

Application filed September 16, 1879.

To all whom it ma/y concern Be it known that I, MATTHEW S. ANDREWS, ofSomerville, in the county of Middlesex and State of Massachusetts, haveinvented an Improvement in Coolers for Soda -Water and other SimilarApparatus, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, makingpart of this specification, in Which-- Figure l is a perspective view ofa portion of a cooler constructed in accordance with my invention. Fig.2is a perspective view of one of the halves or sections of one of thecooler- 1 vessels. 1 Fig. 3 is a section through a series ofcooler-vessels connected together.

The ordinary cooler used for soda-Water and other similar apparatus iscomposed of a series of flattened circular vessels connected together bysuitable pipes or passages leading from one to the other, an extendedcooling-surface being thus afforded for the aerated liquid passingthrough these vessels on its way to the drafttube. The vessels composinga cooler of this description must necessarily possess great strength, inorder to resist the pressure of the gas contained in the aerated liquid,and on this account they are made of copper, as the strength andtenacity of this metal render it particularly adapted for the purpose, alining of tin being employed to prevent the corrosion which wouldotherwise be produced.

To properly line these vessels with tin has, however, heretofore beenattended with many difficulties. They have been washed or coated bydipping them in molten tin; but this coating, being thin, soon wearsoff, leaving the copper exposed, which is extremely dangerous on accountof the corrosion, and it has, therefore,

been often customary to provide these vessels with a lining of rolledtin of the desired thickness, formed of pieces of the required shapessoldered together at the joints; but with this latter construction thereis no adhesion be- 5 tween the surface of the copper and the tin liningin contact therewith, and it has been 'found impossible to prevent thegas in the aerated liquid from penetrating at the joints and introducingitself between the lining and the inner surface of the copper vessel, inwhich case the great pressure of the gas causes the tin lining tocollapse, rendering the cooler useless. Furthermore, the air-spacenecessarily formed between the vessel and its lining, owing to theirwant of adhesion, serves as a nouconductor, and interferes to someextent with the rapid cooling of the contents of the vessel.

My present invention has for its object to overcome all of thesedifficulties and objections; and it consists in a copper cooler-vesselprovided with a tin lining of suitable thickness cast into it so as toadhere firmly thereto, as a new article of manufacture, thus forming onehomogeneous piece, whereby, great durability and entire freedom from theobjections 6 incident to coolers as heretofore constructed are secured.

To enable others skilled in the art to understand and use my invention,I will proceed to describe the manner in which I have carried it out.

In the said drawings, A, A, Fig. 1, represent two vessels of a seriescomposing a'cooler for a soda-water apparatus, one of the vessels beingbroken away to show its interior. Each 7 5 of these vessels, which is offlattened circular form, as seen in Fig. 1, is composed of a sheetcoppershell, I), made in theusual manner, of two halves or sections, Fig. 2,which, after being lined, as will be hereinafter described,

are soldered together and strengthened by an outside band, 0', pipes orpassages 61 being provided for connecting each vessel with the next oneof the series on either side. Each half of the shell I) is furnishedwith a lining, c, of tin of suitable thickness, which is cast into it byplacing each half in a mold provided with a suitable core and ways forallowing the molten metal to run rapidly over the entire surface to becovered, the'mold being so formed as to allow of a flame being broughtinto contact with the outside of the shell, which is thus kept heatedwhile the molten tin is being poured into the mold, whereby the tin iscaused to flow uniformly over the surface to becov- 5 cred thereby. Bythus providing the vessel A with a tin lining cast into place asdescribed the latter is caused to adhere firmly and tenaciously to theshell I) and form one homogeneous piece therewith, and, conse- ,Ioo

quently, all liability of the separation of the two from any causewhatever is entirely avoided; and as there is no airspace between theshell and its lining, the rapid cooling of the contents of the vessel isin nowise interfered with. Furthermore, the cost of lining a 5 cooler inthe manner above described is very small, While its durability isgreatly increased and all liability of corrosion avoided.

1. do not confine my invention to coolers for sodawater apparatus, as itis obvious that [O cooler-vessels constructed in accordance with myinvention may be employed for apparatus for dispensing beverages of anydescription.

What I claim as my invention, and desire to secure by Letters Patent,is-

As a new article of manufacture, a soda- 15 Water coolervessel having alining of tin cast within it, substantially as and for the purposeherein shown and described.

VV-i tness my hand this 6th day of Septem her, A. D. 1879.

MATTHEW S. ANDREWS.

In presence of P. E. TESOHEMACHER, JAMES N. NoR'rI-I.

